Fume control for sulfur dioxide ammonia absorption systems
US4004966A · kind A · utility
6Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1974 |
| Grant date | Jan 25, 1977 |
| Priority date | — |
| Expiry date | Dec 19, 1994 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21C11/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of absorbing SO.sub.2 by use of an absorbing medium containing ammonia compounds is described. In a process wherein sulfur bearing constituents are combusted, SO.sub.2 bearing flue gases are generated. Having been cooled, the flue gases are contacted in a multi-stage absorption system by aqueous absorbents comprised of ammonium compounds which are maintained so that SO.sub.2 is removed from the flue gas and the formation of the ammonium sulfite fume is inhibited.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.